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TLS Online TPP Program

#Question id: 4227

Which of the following statements supports the one gene-one enzyme hypothesis?

#Unit 3. Fundamental Processes

  1. A mutation in a single gene can result in a defective protein.

  2. Alkaptonuria results when individuals lack multiple enzymes involved in the catalysis of homogentisic acid.

  3. Sickle-cell anemia results in normal hemoglobin.

  4. Multiple antibody genes can code for different related proteins, depending on the splicing that takes place post-transcriptionally.

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TLS Online TPP Program

#Question id: 1509

#Unit 4. Cell Communication and Cell Signaling

Cells that are infected, damaged, or have reached the end of their functional life span often undergo "programmed cell death." This controlled cell suicide is called apoptosis. Select the appropriate description of this event on a cell's life cycle.
TLS Online TPP Program

#Question id: 12752

#Unit 13. Methods in Biology

Which of the following cannot be used to remove protein contamination from nucleic acids?
TLS Online TPP Program

#Question id: 7095

#Unit 5. Developmental Biology

Which of the following, first discovered through mutagenesis studies in Drosophila, also function in the development of mammals like us?

a) hedgehog

b) homeobox genes

c) the Wnt family

d) the Toll signaling pathway

Which of the following combination is correct?
TLS Online TPP Program

#Question id: 12011

#Unit 10. Ecological Principles

The supercontinent that began to break up during  the Triassic
TLS Online TPP Program

#Question id: 2484

#Unit 2. Cellular Organization

The EB1 protein has several functions.  Which of the following is/are true regarding EB1?